GPA Calculator
Your semester GPA is the credit-weighted average of the grade points for every course you took, not a plain mean. Get the credit hours wrong and the number drifts by tenths of a point — enough to miss a scholarship threshold. This calculator handles the standard US 4.0 scale and the 5.0 honours/AP scale with proper A/A−/B+/B/… mappings.
How to calculate GPA
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1
Add each course
Course name (optional), letter grade, and credit hours.
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2
Pick the scale
US 4.0 for regular classes; US 5.0 when honours/AP courses are weighted.
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GPA = Σ(grade points × credits) / Σ credits
Each letter maps to a grade-point value, multiplied by credit hours.
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Read the GPA
Total grade points divided by total credits, shown to two decimals.
US 4.0 scale
| Letter | Points | Letter | Points | Letter | Points |
|---|---|---|---|---|---|
| A+ | 4.0 | B+ | 3.3 | C+ | 2.3 |
| A | 4.0 | B | 3.0 | C | 2.0 |
| A− | 3.7 | B− | 2.7 | C− | 1.7 |
| D+ | 1.3 | D | 1.0 | D− | 0.7 |
| F | 0.0 |
Some schools award a flat 4.0 for A+; others cap at A = 4.0 and treat A+ identically.
US 5.0 (weighted) scale
Honours and AP classes add 0.5 or 1.0 grade points to account for course difficulty, turning an A in AP Calculus into 5.0 instead of 4.0. Check your school’s transcript policy — there is no single standard.
Worked example
| Course | Grade | Credits | Points | Credits × Points |
|---|---|---|---|---|
| English 101 | A | 3 | 4.0 | 12.0 |
| Calculus | B+ | 4 | 3.3 | 13.2 |
| History | A− | 3 | 3.7 | 11.1 |
Total credits: 10. Total weighted points: 36.3. GPA: 36.3 / 10 = 3.63.
Common pitfalls
- Treating all courses equally without credit hours. A 1-credit lab and a 4-credit calculus class should not have the same weight.
- Mixing weighted and unweighted. Pick one scale per transcript — mixing 4.0 and 5.0 values misrepresents averages.
- Pass/fail courses. Most schools exclude P/NP from GPA — do not enter them.
Frequently Asked Questions
Enter every course from every semester, or multiply each semester GPA by its total credits, sum them, and divide by total cumulative credits. Semester averages cannot just be averaged together.
No. Withdrawals appear on the transcript but are not assigned grade points and do not count toward the credit total used in GPA.
Common US thresholds: cum laude 3.50, magna cum laude 3.70, summa cum laude 3.90 — but every school sets its own. Some use rank-based cut-offs (top 5%, top 10%) instead of fixed GPAs.
No. The courses you enter stay in your browser session and are not transmitted.